Theft-preventing device for vehicles



J. A. JOHNSON AND J. P. THOMPSON.

THEFT PREVENTING DEVICE FOR VEHICLES. AFPLICATION min APR.4. I921.

* I nvvmme JflJo nson Patented Dec. 12, 1922.

IIJIH llllllllllllll l h LIIMI WITNESSES I .4 TTOHNEYS THEFT PREVENTING DEVICE FOR VEHICLES.

APPLICATION FH-El) APR.4. I921.

Patented Dec. 12, 1922.

Q I E m if? m w W w/ J? H 47 u 4 3 1| 3 w H My 7 W -2 w 7 w a WITNESSES w fi Patented Dec. 12, 1922.

4 UN IT ED "ST AT ES PATENT QFl iQE.

JOHN ARTHUR FOHNSON AND JAMES PEARL THOMPSON. OF LEKVENWORTH, KANSAS.

THEFT-PREVENTING DEVICE FOR VEHICLES.

Application filed April 4, 1921.

To all whom it may concern Be it known that We, JOHN iin'rnnn J OHN- SON and JAMES PEARL TnoMPsoN, citizens of the United States, and residents of Leaven- Worth, in the county oi Leavenworth and State of Kansas, have invented certain new and useful Improvements in ihei't-Prevent 'ing Devices for Vehicles, of which the following is a specification.

The present invention relates to theft pre -"ventingdevices for vehicles and is especially adapted for use with vehicles having a. "power plant of the internal combustion type.

'The object of the invention is to provide a theft preventing device of this character which is associated with the fuel supply and which may be locked to shut oil" the fuel supply and preclude peratiou oi' the engine by an unauthorized person. which may he easily released bvuu authorized person to permit the free flow oi fuel and operation of the vehicle. and which is of simple and durable construction. reliahle in operation and easy 'and inexpensive to manufacture and apply.

Another object is to provide a theft preventing device'o't this character which is especially adapted for use with internal conn bustion engines of automobiles. trucks. tractors. boats. aeroplanes and the like. and which it' desired mav be utilized as a throttle for controlling the flow of the iuel to the engine.

"Other objects and. advantages of the invention reside in certain novel features of construction, combination and arrangement of parts which will be hereinafter more fully described and particularlv pointed out in the appended claims. reference being had to the accompanying drawings forming: part of this specification. and in which:

Figure 1 is an elevation-a1 view. illustrat inn the invention applied to the intake mani fold of an internal, combustion engine;

Figure is a plan view. the manifold being shown in section;

Figure 3 is a plan view with the top plate of the casing removed;

Figure 4 is a detail view in bottom plan of the top plate and .1 Figure 5 is a'transverse sectional view.

Referringdo the drawings wherein for Qthe isakewofiillustrat-ion is shown the preferred embodiment of the invention it'will Serial No. 458,233.

be seen that the theft preventing device which is designated generally at T is organized with the tuel supply of an internal combastion engine. such for instance as an intake inani told ii. The theft preventing device comprises a two-part casing designated generally at it) ulhl including a bottom plate 11 having a flange l) and a top plate 13 having reduced portion 13 accommodatinn the flange. Screws i isecure the plates to, her. The plate deline :1 chamber 15 and they are provided with alined openings d signated at 16 and 12'. which also aline with the sections of the manifold. The casino is secured to the manifold by means of threaded studs .8 and 19 carried by the plates 1.] and 152 01" the casing and received l? suitable opeuiini's provided therefor in the thingies oi the sections of the manifold. Nuts and 21 are threaded on the studs and secure the casim; in position.

1. swinging valve i is mounted in the :lmnhcr ol' illc casino. lrcine carried by a rotatable valve shu't't :26 journaled in the plates of the casing'antl connected to the va ve lay means of :1 squared portion 27 in a similarly squared open- The my) in the valve. as shown in Fiaurc 5. valve 95 in tho and has the general form o a se tor and lot its majo portion it is iinprriorate. At one siihg however. it is pro' vided with a iir uhir opening! 29 which in the open position oi the valve is adapted to be alined with the openings 16 and 17 and ivifh the open ns1- oi the manifold to permit a ree flow therethrouch. \Vhen the imperforate portion 0? the valve s disposed be tween the opening s 6 end 17 and lies across the manifold th low is entirely cut oil and the valve is closed.

Means is provided for normally maintainng the valve in open position. and comprises a coil spring 30 secured. as at 3?. to the valve '25 and secured at its other end to a. stationary post 32. The spring" is tensioned to maintain the valve in open position and resilientlv opposes movement of the valve to closed position.

(berating mechanism s provided for adiustingr the valve or for closing it against the tens on of the spring. 30. This operating mechanism includes a crank arm fixed to the valve shaft 536 exteriorly of the casing and-having an eye 34 formed at its outer end for receiving the oliset endilii'of a control! or i 1i 7, w nd, N l.

i. seat or l te-ever 4i n'ziz'ialml Q. i i'uiui'zlhle shiii't hit a i erntii el ez with lwin slot

lif'ii in initial pzrsiiion, ihzii is n the ii' sitien in \Yllifih the SPSiTOUS l5 if the push mus lip ing' it a humping po t Fi i is arrimqml iipun the to plnie l-i at the in sing and Parties f n mliustnhlu almtinent surfli :1 set serve 51. which may he zhiiHH'i'ml tn eg agg'e the Pi'unl: arm 22, The l'mnipiiig 1 m is :1l'- 'rwl il wii ilw hm ilntu as to permit El mm lete fWlliP of the vali'e when (lesirm'l mil n orih'r EHtVfiIlif this r-mi'iplete cl0- sum the set FPI'PW must be adjusted to ere tenel a siibstaiitial distance from the hump ing post.

A. cover plate is provided for the lmy hole of the locking mechanism. This cover and retract it to t shown in Figure 3, As soon hv. if ieii'zivti-tl the ('(Hi spring i" aiiiiell with the openings 16 lwircd to use the vah'e "35 W l ';ll(lEE-:' the: key is left in the barrel liiill the valve :41 may he freely shifted from (if 11: to cluseii position and to various in- 4 u iali iie msitions as the locking mechais wmlerecl, inactive. When it is des eii the hacking mechanism so that we l na' vl luv-l; in its initial p0si- I! 2 l hm this is down the filliiii li 42 has been lwiirihwl :inll i i; frank 13 has been moved out n5 ir e'aissmmat wi l: the hult 38. This per .s ilw wring 4-6 in lH'QlO-lfl the bolt into PlWElfJHH-Hl with the mljaaent pni'tion 0f lw \nlw 25. Thin when the valve is turned in win 1 lHJvlli Oli hy snitel le manipulation wiitm! 3G and emnl: 33 the bolt in miir'v l naps into the keeper 41 and la the Yfllt'fi in 0105011 is so closed it ii]: engine and ii'eehules its operation use Melt h an unauthorized person. It is in he: imti-il that in thn ulnsed position of itli valve the passage of thv i-ngine is com- Tlhjlil) ullsii-m-leil so that How n'l fuel 01' wl' 1hrl'irwl iiiit-Liui or air or hydrocarbon i "PMI iWl tiriii f the engine is Mel; m'whnlo l. When the locking i i i wt so that the valve may he lwlw-l in iuin aieicr-loserl pnsitinn. the ill,- vi mm ri livlvss; he lll 0il as a throttle i llwsiiwl. This is liimiirlit a mnt h adjust iw the abutment 51 sq that it lies in the 12th E the fi'm'ik arm 3 and arrests the :wiv Mlh of this firm and censequ'ently oi the valveliel me the valve has been com- 'ilvivly tmmwl m :iline its keeper 41 with la; lmlt 3H hut after the imperfiirate portimi m the valve has been moved across the inst-awe: iiiiilliil lay the openings 16, 17 and 20 turning! the abutment 51 out of the m" the rmnl: arm the lock lug may he moved past the abutment to turn the valve "2- in mmplete (*lnsorl nosition and aline its keeper 4] with the bolt 38 thereby permitting? the spring 47 6 to snap the bolt into the keeper and. lock the valve in closed position.

i it! It is obvious that in the open position of the valve it affords no obstruction to the free flow of the fuel and conseqently in no- Wise impairs the elliciency of the engine.

lle claim:

1. In a device of the character described for use with internal combustion engines having a fuel supply, a casing incorporated in the fuel supply consisting of upper and lower plates having openings communicating with the fuel supply, a swinging valve car 'ied by the casing and having an imperforate portion and a portion provided with an opening, a coil spring arranged in the casing and connected at one end to the valve for maintaining it with its opening alined with the fuel supply to permit flow of fuel, operating means for swinging the imperforate portion of the valve across the fuel supply to prevent flow of fuel including a crank arm connected to the valve and an operating rod associated with the crank arm and locking mechanism for securing the valve in closed position including a bolt engageable with the valve, :1 spring for projecting the bolt into engagement, a rotatable shaft having a crank engageable with the bolt and a lock cylinder having a key-operated barrel controlling the rotatable shaft.

1?. In. a device of the character described, a casing, a swinging valve therein, a valve shaft carrying said valve, means for main taining the valve in open position, operating means for closing the valve including a crank arm connected with the valve shaft, and an operating rod connected to the crank arm and locking mechanism for the valve including a bolt engageable therewith, a rotatable shaft controlling the bolt, and a lock cylinder having a key operated barrel controlling the rotatable shaft.

3. In a device of the character described, the combination with the manifold of an engine, a casing incorporated in said manifold and having openings affording a passage therethrough, a swinging valve arranged in said casing and controlling said passage, operating means for said valve, and locking mechanism for the valve including a bolt engageable therewith, a rotatable shaft controlling the bolt and a keycperated barrel controlling the rotatable shaft.

l. In a device of the character described, the combination with the manifold of an engine, a casing incorporated in said manifold and having openings affording a passage therethrough, a swinging valve arranged in said casing and controlling said passage, and locking mechanism for the valve including a bolt engageablc therewith. a rotatable shaft controlling the bolt and a key operated barrel controlling the rotatable shaft.

.1. in a device of the character described, the combination with the manifold of an engine. a two-part casing incorporated in said manifold and including upper and lower plates having alined openings therethrough communicating with the opening of the manifold and constituting a passage, means for securing the plates of the casing to the manifold, a swinging valve arranged in the easing and having; n iinpcri'ornte portion and a portion provided with an opening, spring means for maintaining the valve in open position, operating means for the valve, and locking mechanism for securing the valve in closed position including a bolt engageable with the barrel, :1 spring for projecting the bolt into engagement. a rotatable shaft having a crank engageablc with the bolt and a lock cylinder having a cooperating barrel controlling the rotatable shaft.

it. in a device of the character described, the combination with the manifold of an engine, a two-part casing incorporated in said manifold and including upper and lower plate having alincd openings thercthrough communicating with the opening of the man ifold and constituting a passage, means for securing the plates of the casing to the manifold, and a swinging valve arranged in the casing and having an imperforate portion and a portion provided with an opening, operating means for the valve and locking mechanism for securing the valve in closed position including a bolt engageable with the valve. and key operating means for releasing the bolt.

JOHN ARTHUR JOHNSON. JAMES PEARL THOMPSON. 

